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An alternating e.m.f., e = 300 sin 100 p...

An alternating e.m.f., e = 300 sin `100 pi` t volt, is applied to a pure resistance of `100 Omega`. The r.m.s. current through the cicuit is

A

`2.12 A`

B

`0.212 A`

C

`20.12 A`

D

`0.0212 A`

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